Catharsis.NET.Domain is a .NET library which provides commonly used types of domain business entities such as articles, blogs, comments, downloads, and a FAQ to speed up the development of typical business applications. It includes domain entity types declared as partial classes (can be extended if necessary), a set of common domain-related interfaces, like INameable and ITaggable, and a set of extension methods for IEnumerable/IQueryable sets of domain entities.